Oven



F. E. WHIIE. OVEN.

APPLICATION FILED JAN. 30, 1920. 1,381 527. Patented June 14, 1921.

2 SHEETSSHEET 1- L 9 dam a;

F. E. WHITE,

OVEN. APPLICATION FILED JAN. 30 1920.

Patented June 14, 1921.

2 SHEETSSHEET M Gnome;

Uhlil') STATE OFFICE.

AND GAS STOVE CGMPANY, 0F GARDNER, IvIASSACHUSETTS, A GGR'EQRATIQNnearest.

QVEET.

Specification of Letters lateut. Patented Jane 141 ,1921.

Application filed January 30, 1920. Serial No. 355,036.

To all whom it may concern:

Be it known that I, FRED E. WHITE, a citizen of the United States, and aresident of Gardner, in the county of Worcester and tate ofMassachusetts, have invented certain new and useful Improvements inOvens, of which the following is a specification.

My present invention relates to improvements in ovens and particularlyto portable ovens of sheet metal of the type designed to be used'on oiland gas stoves.

The invention aims to provide an oven' with a door which will effect atight closure of the oven and reduce troubles due to the warping of thedoor to a minimum.

The invention aims further to provide means by which the door may beasily manipulated by one hand in opening and closing, and when closedsecurely fastened.

Another object is to provide a door which will be connected by a simple,strong and durable hinge connection adapted to hold the door inhorizontal position when open.

The invention includes the novel features of construction andarrangement and com bination of parts hereinafter described andparticularly defined by the appended claims.

An embodiment of my invention s illustrated in the accompanying drawingsin which:

Figure 1 is a perspective view of my 1mproved oven with the door closed.

Fig. 2 is a similar view of the front portion with the door open.

Fig. 3 is an enlarged detail view n front elevation of the doorfastening device with the door closed and fastened.

Fig. 4: is a view similar to Fig. 3 with the handle in unlockingpositionj Fig. 5 is a section on the line 55 of 3, looking in thedirection of the arrows.

ig. 6 is an enlarged fragmentary side elevation showin the hingeconnection.

Figs. 7 an 8 detail views of the hinge. members, and

Fig. .9 is a section on line 9-9 of Fig. 6. Referring by referencecharacters to these drawings the numeral 1 designates the oven properwhich may be of the ordinary or any desired construction and 2 the doorthereof having itslower edge hinged to the oven at a suitable distanceabove the bottom thereof. These ovens, and the doors thereof, are

customarily made of sheet metal and a great.

deal of trouble has been experienced with leakagepf air around the edgesof the door due to 1nab1l1ty to secure a tight fit, especially when thedoor becomes warped, as frequently happens. This leakage of airinterferes with the proper operation of the oven.

In order to avoid this I provide the door with a marginal flange orflanges extending perpendicular to the plane of the door, which bracesthe door and prevents warping. The marginal flanges at the upper andside edges of the door are formed by turning the metal of the door overat right angles toward the oven, and the dimensions of the door relativeto the oven are such that when the door is closed these flangesindicated at 2 and 2' overlap the sides and top walls of the oven andeffect a tight closure.

The lower or hinged edge of the door I brace by a flange 2 which isturned out wardly so as not to interfere with the opening of the door.

To enable the door to be held securely fastened when closed, and easilyunfastened and opened, and closed and fastened by the use of one handonly, I provide the following mechanism: A. catch or hook member '3,preferably of spring sheet metal, is secured to the top of the oven in asuitable manner and is adapted to project through an opening 2 in theadjacent part of the oven door.

. This catch has a downwardly projecting portion 3 designed to form aretaining or locking shoulder, and an upwardly curved or inclined outerportion.

A sheet metal clip 4 is riveted to the front wall of the door and has anoutwardly inclined bifurcated portion forming two ears 4 which areturned over upon themselves to form eyes located upon opposite sides ofthe opening 2 A handle member 5, preferably in the form of a closedloop, has portions pivotally held in said eyes and an intermediateoffset or crankedportion 5 which is designed to ride upon the inclinedportion 3 in closing, and engage behind the shoulder 3 The side bars ofthe handle are preferably in clined downwardly as shown in Fig. 5, and

the cross bar connecting them preferably carries an insulated orself-cooling handle as indicated at 6.

The arrangement of parts is such that when thedoor is closed andfastened as shown in Fig. 5 the outward pull of one hand upon the handlein the natural act of opening the door first swings the handle up intothe position shown in dotted lines to disengage the cranked portion fromthe shoulder of the catch, and the continued outward pull opens thedoor. This enables the operator to easily open the door with one handwhile holding in the other hand an article to be placed in the oven. 1

Similarly, in closing the door the upward pull upon the handle inraising the door from the horizontal holds the crank portion out ofcatch engaging position but when the door contacts with the oven thenatural shove upon the handle to effect a tight closure causes thecranked portion to be thrown up between the shoulder 3 and the face ofthe door to fasten the latter in position. It will be seen that owing tothe are on which this crank portion swings it bears with a cam action onthe front face of the door.

In order to limit the outward swing of the handle a stop lug orprojection is provided as indicated at P. I

So far-as we are aware, as heretofore constructed oven doors of thischaracter have been provided with a catch to engage the edge of theupper marginal flange of the door opening which does not furnish a rigidand dependable hold for the catch on the door, there being nothin toprevent the spring of the sheet metal rom allowing the front or marginalportion to spring, thus permitting the door to fall away from itscontact with the oven front. In our construction the catch is secured tothe top wall of the oven and thereby secures a rigid and dependablefastening.

The specific arrangement of the catch and latch members takes all weightand strain from the cut away front wall of the oven and when the oven isheated, this prevents warping.

My improved hinge connection comprises a pair of bars for each side ofthe oven which are shown in detail at 7 and 8 in the correspondinglynumbered figures.

The bars 7 are riveted or otherwise suitably secured to the marginalflanges at the inner or lower corners of the doors, and are providedpreferably with overturned flanges 7" which overlie the front face ofthe door as clearly shown in Fig. 1.

The bars 8 are riveted or otherwise suitably secured to the sides of theoven, but I prefer to strike the sheet metal walls of the oven outwardlyas shown at 1" to form pockets or channels in which the bars are seated,being held therein by screw bolts or rivets as indicated at 9, Figs. 6and 9.

The ends of the bars 7 and 8 overlap and are pivotally connected byhinge pins 10.

Bars 9 are provided with shoulders 7 designed when the door is opened,to abut against the lugs 8 carried by the bars 8, and the bars 8 areprovided with shoulders 8 adapted to abut against the lower or inner endof the flange 7. By this arrangement a double set of stops is providedfor each set of bars on opposite sides of the hinge pins, thus forming astrong support for the door when in full open and horizontal position asshown in Fig. 2, this arrangement relieving the hinge pins of strain.

- Having thus described my invention, what I claim is:

1. A sheet metal oven having an open front and an oven door closing saidfront and hinged at its lower edge, said door having an inwardly turnedmarginal flange on its side and top edges overlapping the oven wallswhen closed and having an outwardly turned flange at its lower edge.

2. In an oven having an open front, a door pivoted at its lower edge, alatch carried in proximity to its upper end, a flange extending alongthe upper edge of the door, said door having an opening below theflange, a catch carried by the top of the oven and extending to thefront of the same and adapted to pass through the opening in the doorand be engaged by the latch.

In testimony whereof, I aflix my signature.

FRED E. WHITE.

